Fix phpstan errors

Author: TRowbotham

phpstan.neon

@@ -9,10 +9,7 @@ parameters:
         - bin
 
     ignoreErrors:
-        -
-            message: '#Parameter \#2 \$form of static method Normalizer::normalize\(\) expects int, string given\.#'
-            path: src/CodePointString.php
-            count: 2
+        - '#Parameter \#2 \$form of static method Normalizer::(isNormalized|normalize)\(\) expects int, string given\.#'
 
         # This error can safely be ignored as we do these checks when building the data files.
         -

src/CodePoint.php

@@ -53,7 +53,7 @@ public static function encode(int $codePoint): string
      *
      * @see https://encoding.spec.whatwg.org/#utf-8-decoder
      *
-     * @return array<int, int>
+     * @return list<int>
      */
     public static function utf8Decode(string $input): array
     {

src/LabelValidator.php

@@ -37,6 +37,9 @@ public function __construct(DomainInfo $info)
         }
     }
 
+    /**
+     * @param list<int> $codePoints
+     */
     protected function isValidContextJ(string $label, array $codePoints): bool
     {
         $offset = 0;